math

on a certain day the propellers complete 20 revolutions per minute and have a speed at of 45 m/s calculate the radius of a propeller to one decimal place using pie as 3.14 ?

1. 20*2πr = 45*60

must be a wind turbine.

posted by Steve
2. esGferl g,ktbr,kjT,aI

posted by Emily

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